Separable strap fastener



FIG. 1 is a top plan view of a separable strap fastener showing my new design;

FIG. 2 is a bottom plan view; and

FIG. 3 is a front elevational view thereof in a separated condition.

The rows of a single dashed lines shown on the right side in FIG. 1 represent the hooks shown on the right side in FIG. 3. 

The ornamental design for a separable strap fastener, as shown and described. 